Number | Date | Country | Kind |
---|---|---|---|
198 26 671 | Jun 1998 | DE |
Number | Date | Country |
---|---|---|
0345775 | Dec 1989 | EP |
0432661 | Jun 1991 | EP |
9324470 | Dec 1993 | WO |
WO 9504726 | Feb 1995 | WO |
9504726 | Feb 1995 | WO |
9706153 | Feb 1997 | WO |
Entry |
---|
CA 103:53982, Katritzky et al., 1985. |